Bayesian learning scheme for sparse DOA estimation based on maximum-a-posteriori of hyperparameters

In this paper, the problem of direction of arrival estimation is addressed by employing Bayesian learning technique in sparse domain. This paper deals with the inference of sparse Bayesian learning (SBL) for both single measurement vector (SMV) and multiple measurement vector (MMV) and its applicability to estimate the arriving signal’s direction at the receiving antenna array; particularly considered to be a uniform linear array. We also derive the hyperparameter updating equations by maximizing the posterior of hyperparameters and exhibit the results for nonzero hyperprior scalars. The results presented in this paper, shows that the resolution and speed of the proposed algorithm is comparatively improved with almost zero failure rate and minimum mean square error of signal’s direction estimate

Analysis of clinical profile and prescription pattern of malaria in a tertiary care hospital in Karnataka, India

Background: Malaria is one of the leading causes of morbidity and mortality in developing countries like India. Plasmodium falciparum and Plasmodium vivax are the commonest species implicated for an increased incidence of malaria in India. The pattern of disease, signs, and symptoms vary from place to place, region to region due to demographic variations. The current study was undertaken to study the differences in the clinical profile of malaria, particularly signs and symptoms, complications and response to treatment in malaria.Methods: A retrospective, single center, surveillance study was carried out at a tertiary health care center in Mangalore. All patients aged above 18 years diagnosed as malaria by peripheral smear method and rapid diagnostic tests were included in the study. The clinical features, complications, and response to treatment were noted.Results: Fifty eight patients diagnosed as malaria were included in the study. Compared to other studies and nationwide incidences, here P. vivax emerged as the leading cause of malaria. All patients presented with fever varying from 3-20 days. About 30 patients complained of headache and 21 patients presented with malaise. In about 6 patient’s complications were seen. Majority of patients received artemisinin derivatives followed by chloroquine for treatment of malariaConclusions: Previous thinking that complications are only seen with P. falciparum has to be changed. Now many complications, mild as well as severe type are seen in P. vivax malaria. Drug resistance is another global problem which needs to be tackled wisely by systematic usage of antimalarials

Combined transbrachial and transfemoral strategy to deploy an iliac branch endoprosthesis in the setting of a pre-existing endovascular aortic aneurysm repair

This article describes brachial access to position a long sheath in the abdominal aorta in conjunction with a large caliber sheath via the femoral artery ipsilateral to the target site to deliver a 0.018 bodyfloss wire. This bodyfloss wire is inserted into the precannulation port of the iliac branch endoprosthesis (W. L. Gore and Associates, Flagstaff, Ariz), which is then advanced from the groin. Once the bifurcated device is deployed, hypogastric access and stenting is achieved from the upper extremity. This technique is an alternative to safely extend the distal seal while preserving the hypogastric artery and has the advantage of limited iliac bifurcation manipulation

On the discrepancy of random low degree set systems

Motivated by the celebrated Beck-Fiala conjecture, we consider the random setting where there are n elements and m sets and each element lies in t randomly chosen sets. In this setting, Ezra and Lovett showed an O((tlogt)1/2) discrepancy bound in the regime when n ≤ m and an O(1) bound when n≫mt. In this paper, we give a tight O(√t) bound for the entire range of n and m, under a mild assumption that t=Ω(log log m)2. The result is based on two steps. First, applying the partial coloring method to the case when n=mlogO(1)m and using the properties of the random set system we show that the overa

Load Tests on Drilled Shafts for Highway Bridges

Most of the highway bridges arc supported on deep foundations. Safe and economical design and construction of deep foundations requires the use of rational procedures to determine the load capacity of the foundation. A static load test may be conducted to measure the response of a pile under applied load. Conventional static tests include axial compressive, axial tensile and lateral load testing. The purpose and advantages of load testing are explained in the light of large-scale construction of deep foundations for highways for the new millennia. This paper presents a case history of load tests on high capacity drilled shafts. An adequate foundation design can be made with detailed subsurface exploration and soil testing, subsurface profile development through in situ tests, and static analysis. The results are compared with available solutions. Based on the results of the testing program, load transfer curves are provided for analysis. The focus of the paper is to give some useful information on load tests on drilled shafts along with a case history

Behavioral Impacts of the Fear of AIDS: A Sociological Model

The paper demonstrates the conceptual meaning and utility of a sociological model for identifying correlates of the fear of AIDS and its consequent changes on peoples\u27 behaviors. A sociological notion of levels of analysis is employed for classifying correlates of AIDS\u27 fears under structural and individual categories. A tentative list of these correlates and their projected relationship with peoples\u27 fears is suggested to illustrate the model